<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>伪类 - 选择 - 输入密码熊猫闭眼</title>
</head>

<body>


    <form>
        <input type="text" id="ipt" placeholder="请输入..." />
    </form>

    <style>
        form {
            border: 1px solid;
            width: 400px;
            height: 300px;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        form:focus-within {
            box-shadow: 0px 4px 4px rgba(0, 0, 0, 0.3);
            background-color: beige;
        }
    </style>


    <div class="login-form">
        <h2>账密登录</h2>
        <div class="form-item form-tel">
            <input maxlength="64" placeholder="邮箱/手机号（国际号码加区号）">
            <img src="https://sf3-scmcdn2-tos.pstatp.com/xitu_juejin_web/img/greeting.1415c1c.png" class="greeting">
        </div>
        <div class="form-item form-password">
            <input class="form-password" type="password" maxlength="64" placeholder="请输入密码">
            <img src="https://sf3-scmcdn2-tos.pstatp.com/xitu_juejin_web/img/blindfold.58ce423.png" class="blindfold">
        </div>
        <img src="https://sf3-scmcdn2-tos.pstatp.com/xitu_juejin_web/img/normal.0447fe9.png" class="normal">
        <button class="btn-submit">登录</button>
    </div>
    <style>
        * {
            margin: 0;
            padding: 0;
        }

        body {
            background-color: #e9e9e9;
        }

        .login-form {
            width: 370px;
            margin: 100px auto;
            padding: 24px;
            background-color: #fff;
            position: relative;
        }

        .login-form h2 {
            color: #333;
            font-size: 18px;
            margin-bottom: 24px;
        }

        .login-form input {
            outline: none;
            padding: 10px;
            margin-bottom: 10px;
            width: 100%;
            border: 1px solid #e9e9e9;
            border-radius: 2px;
            outline: none;
            box-sizing: border-box;
            font-size: 16px;
        }

        .login-form input:focus {
            border-color: #007fff;
        }

        .login-form img {
            width: 120;
            height: 95px;
            position: absolute;
            top: 0;
            left: 50%;
            transform: translate(-50%, -50%);
        }

        .login-form .form-tel img {
            height: 113px;
        }

        .login-form .form-password img {
            width: 103px;
            height: 84px;
        }

        .login-form .form-item img {
            display: none;
        }

        .login-form .form-item:focus-within~img {
            display: none;
        }

        .login-form .form-item:focus-within img {
            display: block;

        }

        .login-form .btn-submit {
            width: 100%;
            height: 40px;
            color: #fff;
            background-color: #007fff;
            border-radius: 2px;
            outline: none;
            box-sizing: border-box;
            cursor: pointer;
            margin-top: 10px;
            border: none;
            padding: 8px 20px;
        }
    </style>

</body>

</html>